They add up to 121
Yes. It is the divisibility rule for 9.
72
There are only two multiples of 36 up to 100, those being 36 and 72. If you add one more 36 you get 108.
If they are multiples of 9, the digits add up to a multiple of 9.
143
11, 22, 33, 44, 55, 66, 77, 88, 99, 110, 121, 132, 143, 154, 165, 176, 187, 198.
They add up to 121
sum means add up so 121 + 7 = 128
All multiples of 3 have digits that add up to a multiple of 3.
1, 2, 11, 22, 121, 242 | 1 x 242, 2 x 121, 11 x 22.
-121
56 and 56
Multiples of 3 are easy to identify. Their digits add up to a multiple of 3.
112 + 32 = 121 + 9 = 130
There are infinitely many multiples of ten. There are infinitely many sets of 2, 3, 4, ..., infinitely many numbers that add up each one of the multiples of ten. It is, therefore, impossible to answer the question.There are infinitely many multiples of ten. There are infinitely many sets of 2, 3, 4, ..., infinitely many numbers that add up each one of the multiples of ten. It is, therefore, impossible to answer the question.There are infinitely many multiples of ten. There are infinitely many sets of 2, 3, 4, ..., infinitely many numbers that add up each one of the multiples of ten. It is, therefore, impossible to answer the question.There are infinitely many multiples of ten. There are infinitely many sets of 2, 3, 4, ..., infinitely many numbers that add up each one of the multiples of ten. It is, therefore, impossible to answer the question.
Yes. It is the divisibility rule for 9.